An access point name (APN) on mobile phones establishes a connection to the gateway between the carrier's network and the internet. The APN finds the IP address that the device is identified with on the network, determines if a private network is needed, chooses the correct security settings, and more.
realme UI 3.0 & above versions: Settings > Mobile network > Select network card > Access point names > 3 dots in the upper right corner > Reset access points
realme UI 2.0 & 1.0: Settings > SIM card & mobile data > Select network card > Access point name > 2 dots in the upper right corner > Reset access points
realme UI R & Go & U & S & T Edition: Settings > Network & internet > Mobile network > Select network card > Access Point Names > 3 dots in the upper right corner > Reset to default
